Brigadier general
Brigadier general, military rank just above that of colonel. In both the British and U.S. armies of World War I, a brigadier general commanded a brigade. When the British abolished the brigade, they discontinued the rank of brigadier general but revived it as a plain brigadier in 1928. In the U.S. and French military services, the brigadier general is the lowest-ranking general officer [Encyclopedia Britannica].
Brigadier general or Brigade general is a military rank used in many countries. The rank is usually above a colonel and below a significant or divisional general. When appointed to a field command, a brigadier general typically commands around 4,000 troops (four battalions).
In some countries, this rank is given the name of brigadier, which is usually equivalent to brigadier general in the armies of nations that use the rank.
The rank can be traced back to the militaries of Europe, where a "brigadier general," or simply a "brigadier," would command a brigade in the field.
In the first quarter of the 20th century, British and Commonwealth armies used the rank of brigadier general as a temporary appointment or as an honorary appointment on retirement; in the 1920s, this practice changed to the use of brigadier, which was not classed as a general officer [Wikipedia].
Brigadier general. Wikipedia. Retrieved from: https://en.wikipedia.org/wiki/Brigadier_general
Brigadier general. Encyclopedia Britannica. Retrieved from: https://www.britannica.com/topic/brigadier-general